Gear wheel



March 19, 1929. H. s. LEw|s ET AL 1,705,932

GEAR WHEEL Filed Jan. 11, 1923 Patented Mar. 19, 1929. i i A R I l UNITED STATES PATENT, OFFICE.

HOWARD s. LEWIS AND oHA LEs RACHEL, F READING, PENNSYLVANIA, AssIGNoRs TO PARISH PRESSED STEEL COMPANY, or READINQIENNSYLVANIA, A CORPORA- 'rIoN OF DELAWARE. A

GEAR WHEEL.

Application filed January 11, 1928 Serial No. 245,964,

This invention relates toimprovements in Figure 2, are then fixed together by spot 40 gear wheels, and it pertains particularlyto welding at anysuitable points where their the construction of wheels for use on lawn surfaces contact. mowers, in which a'toothed inner surface is It will be understood that both the inner required to accommodate a co-acting and r0- and outer Wheel members are {pressed from tatable member of the machine. sheet steel, in the form shown in the accom- 45 The invention contemplates a lawn mower panying drawings, and they are then fixed wheel on which the machine is to be mounted securely together to form, as a unitary strucfor operation, made of sheet metal, preferture, a lightweight, indestructible, interably sheet steel, and in which suchgeared .nally geared lawn mower, wheel. r

surface is conveniently provided. Having thus fully described our invention, 50 To this end we have devised a wheel, what we claim and desire to secure by Letters pressed from sheet steel, consisting of two Patent is p members firmly fixed together, and in which 1. A sheet metal internally geared lawn the tread or outer member is formed with a mower wheel, comprising an inner, annular-1y flange, and the inner member with a flange, formed member having two inwardly pro- 55 the first serving as a wheel tread and the latjecting flanges, the outer one of which is ter as a wheel hub, While the inner member formed with gear teeth and the inner one is provided with an additional flange, which forming the wheel hub, and an outer member, is formed with teeth, providing the geared also of annular form, having an inwardlv surface referred to. 1 projecting flange, serrated on its outer sur 60 The invention ismore fully described in the face, to form the wheel tread, the two memfollowing specification and clearly ill'ustrathers being firmly attached to each other by ed in the accompanying drawing, in which :-1 welding, to form a unitary structure. 5 Figure 1 is an elevational view showing the 2. A lawn mower wheel, made of two an innerside of the wheel. A nularly shaped members pressed from sheet 05 FigureQ is a central cross-sectionthrough steel, one member having two inwardly pro lfi l p JGOtlIlg flanges, one flange serving as the hub The numeral 1 designates the inner memforthe wheel and the other or outer flange ber and isformed with two inwardly pressed having-a series of'gear teeth pressed into it, Y flanges, the one forming the hub, 2, of the the other wheel member having aninwardly 7 wheel, and the other flange 3 forming the surprojecting flange to form the tread of the face in which thegear teetharepressed. wheel, the two members being welded to- The numeral 4 designates the outer memgether to form a unitary wheel structure.

ber, and this is formed with an inwardly In testimony whereof we aifix our signaprojecting flange, 5, forming the tread of tures. I

the wheel, and'which is suitably serrated. 1 Thetwo members, when placed into; osi-- HOWARD S. LEWIS.

tion with relation to each other,'as shown in CHARLES KAGHEL. 

